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Fixed bearing calculation

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jancoow
2016-01-21 20:18:56 +01:00
parent ad5071c7cc
commit d63260ad8d
2 changed files with 13 additions and 10 deletions
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YJMPD-UWP/Helpers/Util.cs
+12 -9
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@@ -147,17 +147,20 @@ namespace YJMPD_UWP.Helpers
public static double DegreeBearing(BasicGeoposition pos1, BasicGeoposition pos2)
{
double lat1 = toRadian(pos1.Latitude);
double lat2 = toRadian(pos2.Latitude);
double dLon = toRadian(pos2.Longitude - pos2.Latitude);
var R = 6371000.0;
Debug.WriteLine(pos2.Latitude);
var φ1 = toRadian(pos1.Latitude);
var φ2 = toRadian(pos2.Latitude);
var Δφ = toRadian(pos2.Latitude - pos1.Latitude);
var Δλ = toRadian(pos2.Longitude - pos2.Longitude);
double dPhi = Math.Log(Math.Tan(lat2 / 2 + Math.PI / 4) / Math.Tan(lat1 / 2 + Math.PI / 4));
if (Math.Abs(dLon) > Math.PI) dLon = (dLon > 0) ? -(2 * Math.PI - dLon) : (2 * Math.PI + dLon);
double brng = Math.Atan2(dLon, dPhi);
var a = Math.Sin(Δφ / 2.0) * Math.Sin(Δφ / 2.0) +
Math.Cos(φ1) * Math.Cos(φ2) *
Math.Sin(Δλ / 2.0)* Math.Sin(Δλ / 2.0);
var c = 2.0 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1.0 - a));
Debug.WriteLine(brng);
return ((180.0 * brng / Math.PI) + 360) % 360;
var d = R * c;
return d %360;
}
private static double toRadian(double val)
YJMPD-UWP/MainPage.xaml.cs
+1 -1
View File
@@ -51,7 +51,7 @@ namespace YJMPD_UWP
{
if (e.Handled) return;
App.Game.MoveToStarted(new BasicGeoposition { Latitude = 51.591403, Longitude = 4.743948 });
App.Game.MoveToStarted(new BasicGeoposition { Latitude = 51.591403, Longitude = 40.743948 });
e.Handled = true;
return;